Beam Multiplexing Using the Phased-Array Weather Radar
Beam Multiplexing Using the Phased-Array Weather Radar
复制标题
使用相控阵气象雷达进行波束复用
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
D. Forsyth
中科院分区：
文献类型：
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作者：
Tian;M. Orescanin;C. Curtis;D. Zrnic;D. Forsyth
摘要 最近在国家气象雷达试验台 (NWRT) 安装的 S 波段相控阵雷达 (PAR) 通过电子波束形成提供快速、灵活的波束控制。此功能允许实施一种称为波束复用 (BMX) 的新颖扫描策略，其目标是提供具有高统计精度的天气信息的快速更新。对于传统气象雷达，可以通过将天线的旋转速率增加到基座允许的程度来减少扇形扫描或体积覆盖模式（VCP）的数据采集时间。然而，由于可用于估计的样本较少，谱矩估计的统计误差将会增加。 BMX 的开发是为了利用收集独立样本和最大限度地利用雷达资源的想法。引入了一个改进因子来量化 BMX 性能，该性能的定义是，当使用 BMX 获得相同的数据精度时，使用 BMX 所减少的数据采集时间...
Abstract The recently installed S-band phased-array radar (PAR) at the National Weather Radar Testbed (NWRT) offers fast and flexible beam steering through electronic beam forming. This capability allows the implementation of a novel scanning strategy termed beam multiplexing (BMX), with the goal of providing fast updates of weather information with high statistical accuracy. For conventional weather radar the data acquisition time for a sector scan or a volume coverage pattern (VCP) can be reduced by increasing the antenna’s rotation rate to the extent that the pedestal allows. However, statistical errors of the spectral moment estimates will increase due to the fewer samples that are available for the estimation. BMX is developed to exploit the idea of collecting independent samples and maximizing the usage of radar resources. An improvement factor is introduced to quantify the BMX performance, which is defined by the reduction in data acquisition time using BMX when the same data accuracy obtained by a...